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Auditory steady-state response (ASSR) is an auditory evoked potential, elicited with modulated tones that can be used to predict hearing sensitivity in patients of all ages. It is an electrophysiologic response to rapid auditory stimuli and creates a statistically valid estimated audiogram (evoked potential predicts hearing thresholds).
Auditory brainstem response testing is an electrophysiological test used to test for hearing deficits caused by pathology within the ear, the cochlear nerve and also within the brainstem. This test can be used to identify delay in the conduction of neural impulses due to tumours or inflammation but can also be an objective test of hearing ...
The recording procedures for the scalp-recorded FFR are essentially the same as the ABR. A montage of three electrodes is typically utilized: An active electrode, located either at the top of the head or top of the forehead, a reference electrode, located on an earlobe, mastoid, or high vertebra, and a ground electrode, located either on the other earlobe or in the middle of the forehead.
The sweep technique is a hybrid frequency domain/time domain technique. [16] A plot of, for example, response amplitude versus the check size of a stimulus checkerboard pattern plot can be obtained in 10 seconds, far faster than when time-domain averaging is used to record an evoked potential for each of several check sizes. [16]
Audio steady state response (ASSR) audiometry; Vestibular evoked myogenic potential (VEMP) test, a variant of ABR that tests the integrity of the saccule; Otoacoustic emission audiometry - this test can differentiate between the sensory and neural components of sensorineural hearing loss. Distortion product otoacoustic emissions (DPOAE) audiometry
The auditory nerve action potential, also called the compound action potential (CAP), is the most widely studied component in ECochG. The AP represents the summed response of the synchronous firing of the nerve fibers. It also appears as an AC voltage. The first and largest wave (N1) is identical to wave I of auditory brainstem response (ABR ...
Otoacoustic emissions test is an objective hearing test that may be administered to toddlers and children too young to cooperate in a conventional hearing test. Auditory brainstem response testing is an electrophysiological test used to test for hearing deficits caused by pathology within the ear, the cochlear nerve and also within the brainstem.
However, there are benefits to using pure-tone audiometry over other forms of hearing test, such as click auditory brainstem response (ABR). [3] Pure-tone audiometry provides ear specific thresholds, and uses frequency specific pure tones to give place specific responses, so that the configuration of a hearing loss can be identified.
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